CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets [Abstract]
Cash and due from banks	$ 267,099	$ 82,931
Investment securities available for sale, at estimated fair value	33,922	37,329
Investment securities held to maturity (estimated fair value of $5,630 at September 30, 2017 and $6,419 at December 31, 2016)	5,681	6,500
Other investments	13,740	12,588
Loans	1,381,649	1,055,706
Deferred loan fees and unamortized costs, net	(820)	(1,160)
Allowance for loan and lease losses	(15,075)	(11,815)
Net loans	1,365,754	1,042,731
Accounts receivable, net	3,825	5,420
Receivable from prepaid card programs, net	6,977	7,566
Accrued interest receivable	3,903	2,735
Premises and equipment, net	6,010	5,035
Prepaid expenses and other assets	7,013	7,733
Goodwill	9,733	9,733
Total assets	1,723,657	1,220,301
Deposits:
Noninterest-bearing demand deposits	826,345	403,402
Interest-bearing deposits	662,298	590,378
Total deposits	1,488,643	993,780
Borrowed Funds	43,750	78,418
Trust preferred securities	20,620	20,620
Subordinated debts, net of issuance cost	24,468
Accounts payable, accrued expenses and other liabilities	20,411	10,901
Accrued interest payable	547	227
Debit cardholder balances	6,259	6,864
Total liabilities	1,604,698	1,110,810
Stockholders' equity:
Class B preferred stock, $0.01 par value, authorized 2,000,000 shares, issued and outstanding 272,636 at September 30, 2017 and 272,636 at December 31, 2016, respectively	3	3
Common stock, $0.01 par value, authorized 10,000,000 shares, issued and outstanding 4,633,012 at September 30, 2017 and 4,604,563 at December 31, 2016	45	45
Additional paid in capital	96,422	96,116
Retained earnings	22,536	13,492
Accumulated other comprehensive loss, net of tax effect	(47)	(165)
Total stockholders' equity	118,959	109,491
Total liabilities and stockholders' equity	$ 1,723,657	$ 1,220,301